Table 5. Position, TOC value, and estimated and expected astronomical ages of the identified sapropel layers at Site 975.
Depth
(mcd)
Sapropel
TOC
(%)
Average
age
(k.y.)
Astronomical
age
(k.y.)
0.5 S1 0.27 8.5 8
4.44 S2 0.32 56 55
6.19 S4 0.18 102 102
9.42 S5 0.27 124 124
9.55 S5 1.22

15.81 S6a 1.02 174 172
16.37 S6b 0.91 178
17.84 S7 1.55 194 195
19.4 S8 0.32 218 217
20.46 S9 0.76 240 240

Note: Total organic carbon = wt% of whole sample. Ages are based on Lourens et al. (1996).